There are
1,830 mi
from San Clemente, CA to Wentzville, MO
That's the driving distance. It would take 1 day 8 hours to go from San Clemente, California to Wentzville, Missouri.
The flight distance (direct flight from San Clemente, CA to Wentzville, MO) is 1,533.11 mi.
1,830 mi = 2,945.46 kms